Pipe wrench



1,504,964 H. R. NEWLAND PIPE WRENCH Filed March 30 1923 m lvm/TOR.

Patented Aug. 12, 1924,

I p 1,504,964 raraur 'ortica HOWARD E. NEWLAND, OF BENSEHJ'N, 'WEST 'VIRGINL-fi.

:PIPE WRENCH.

Application filed March 30, '1923. Serial No. 628,738.

To all w/iom t may concern:

Be it known that I, HOWARD R. llnwLANn, a citizen ot the United States, residing,F at Bens Run, in Pleasants County, and State ot' TVest Virginia, have invented certain new and useful lmprovements in Pipe VVrenche-s, of which the following is a specification.

This invention relates to wrenches of the class adapted to gra-sp and firmly hold vrelatively large objects, such as well casings and the like, and has for one of its objects to improve the construction and increase the et'iciency and utility of device of this character.

Another object of the invention is to provide a device of this character which may be operated in either direction without structural change and which may be readily adapted to pipes, rods or similar structures of various diameters.

lVith these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then speciiically pointed out in the claims, and in the drawing illustrative of the preferred embodiment oi the invention Figure 1 is a plan view, partly in section, of the improved implement.

Figure 2 is a side elevationc Figure 3 is a side elevation ot the main stock detached.

Figure 4 is an enlarged detail illustrating the construction of the joint between the outer and inner jaw members.

The improved implement comprises a stock represented as a whole at and formed with a socket 11 in the ends to receive turning` handles 12 and with an intermediate slot 13 therethrough, as shown.

The improved implement includes two sets oit' coacting aw devices which for the purpose of this description are referred to as the outer and inner jaws.

rEhe inner jaws are represented at 14 and 15 reversely curved and pivoted at 16 and 1'? in the slot 13, the jaws 14 and 15 being provided respectively with reversely inclined pipe engaging teeth 18 and 19. The stock 10 and the jaws 14 and 15 are provided with a plurality of apertures for the pivots 16 and 17, to enable the. inner jaw devices to be adjusted nearer to each other and the lengths of the jaws controlled, to enable them to fit larger or smaller pipes or other objects, as shown in Figure 1.

At their outer ends the inner jaws 14 and 15 are formed respectively with spaced ears 19 and 20 between which reduced portions 21 and 22 on the inner ends ot the outer U0 jaw members 23 and 24 are pivoted at 25 and 2G. The outer jaw members are provided with reversely inclined pipe engaging' teeth 27 and 28 corresponding to the teeth 18 and 19 of the inner jaws.

Swinging` at one end at 29 upon the outer end of the outer jaw 23 is a link device 30, the opposite end of the link being coupled at 31 to nut device 32 movable upon the outer curved face of the outer jaw 24.

The outer end oit the outer jaw 24 is formed with an outwardly projecting head 33 against which a straining bolt 34 engages, the bolt operating,` through the nut 32 and provided with. a turning head 35. The pipe is indicated by dotted lines at 36, and against which the teeth of the jaw members engage as indicated in Figure 1.

The improved implement is designed more particularly tor use in handling the casings of oil or like wells, and may be employed with equal facility for screwing the sections of piping together or unscrewing them, by merely reversing the direction of movement ot the operating` handles 12.

lll/dien the implement is to be applied the bolt 34 is released and the link 30 with its nut 32 and the bolt 34 turned over the member 23 and the aws separated to permit the implement to be disposed around the pipe 36, The link vis then restored to the position shown in Figures 1 and 2 and strain applied by actuating the bolt 34 to cause all the teeth to rmly grip the pipe.

It the pipe is to be screwed upon another section the handles 12 will be moved to the right and the teeth 18 and 28 will engage the pipe and rotate it to the right while the teeth 19 and 27 move idly over the pipe It on the other hand the pipe is to be unscrewed, the handles 12 will be turned to the lett and the teeth 19 and 27 will grip the pipe and turn it to the leftn while the teeth 18 and 28 move idly over the pipe.

Thus the pipe can be turned in either direction by merely reversing the motion of the handles 12.

It will be noted that the portions of the outer jaws 23 and 24 externally oi the reduced portions 21 and 22 are bevelled, as shown at 37 and 38, to limit the outer and inner movement of the jaws 23 and 24 relative to .the jaws 14 and l5 and thus `prevent abnormal outward rriovement between the jaws,

The improved implement is simple in construction, is constrcted whollyof metaliand as strong as necessary, and may be constructed of any size or capacity.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specication, but it will be understood that modications within .the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacricing any of its advantages.

Having thus described the invention what is claimed as news7 is:

l. A Wrench device comprising a stock adapted to support a lever handle7 inner jaw devices swinging from said stock, outer jun' devices swinging from said inner jaw devices, a link member swinging at one end tio one of said outer jaw devices. and means carried by the link member cooperating with the other outer jaw device to produce strnin longitudinally of said link member.

2, A `Wrench .device comprising :1 stock adapted Vtosuppoi't"alever handle, inner jaw devices swinging from said stock, outer jaw ydeyices swinging from said inner jaw dcyices7 a link member swinging at one end to one of vsaid outer jaw devices. a .nui devine engaged by seid link member, and a clump screnv engaging said nut an d bearing :1 gninst the other outer jaw member.

In` testimony whereof, I affix my signature` hereto.

HOWARD R. NEWLANI'). 

